User Manual

6 49-50336 Rev. 0
Operating Instructions
Water Heater Capacity and Increasing
Temperature Setpoint:
The water heater temperature setting strongly impacts
the amount of usable hot water available for showers
and baths.
• Safety regulations require a factory setting no
greater than 125°F (52°C) for all new water heaters.
Therefore, if your old water heater was set to a hotter
temperature than your new water heater with a factory
set setpoint of 120°F (49°C), the new water heater
may seem to provide lower capacity than your old
water heater. This can be corrected by increasing the
temperature setpoint.
• If more hot water capacity is desired, increasing the
temperature from 120°F to 135°F (49°C to 57°C)
will enable the same tank of hot water to last about
25% longer because less hot water is mixed in at the
shower or faucet.
• Increasing the water temperature setpoint may
improve the cleaning performance of dishwashers and
washing machines.
• The user can adjust the temperature setting to meet
their needs. Always read and understand the safety
instructions contained in the owner’s manual before
adjusting the temperature setpoint.
If adjustment is necessary...
1. Turn off the power to the water heater.
2. Remove the jacket access panel(s) and insulation
exposing the thermostat(s).
The thermostat protective cover(s) should not be
removed.
3. Using a small screwdriver, set the thermostat(s) dial
pointer(s) to the desired temperature. Adjust the upper
and lower thermostats to the same temperature to
maximize hot water availability.
4. Replace the insulation and jacket access panel(s).
Turn on the power to the water heater.
Mixing Valves
• Mixing valves for reducing point-of-use water
temperature by mixing hot and cold water in branch
water lines are commercially available. Contact a
licensed plumber or the local plumbing authority for
further information.
Extended Shutdown Periods
If the water heater is to remain idle for an extended
period of time, the power and water to the appliance
should be turned off and the water heater drained to
conserve energy and prevent a buildup of dangerous
hydrogen gas. This unit has no power button, power
can only be shut off at the circuit breaker or disconnect
switch.
The water heater and piping should be drained if they
might be subjected to freezing temperatures.
After a long shutdown period, the water heater’s
operation and controls should be checked by qualified
service personnel. Make certain the water heater is
completely filled again before placing it in operation.
NOTE: Refer to the Hydrogen Gas Caution in the
Operating Instructions (see page 3).
OPERATING INSTRUCTIONS
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90°F150°F
125°F
TURN OFF
POWER
BEFORE
SERVICING
Reset
button
Thermostat
dial pointer
Thermostat
protective
cover